Permutation-lock.



No. 632,735. Patented sept.` t2, |399.

.1. H. Monms. t

PERMUTATION LOCK.

(Application filed May 26, 1899.) (Ho Mgdel.) 2 Sheets-Sheet' l.

(Application led May 28, 1899.)

2 sheefvsneet ,2.

(No Modal.)

ms mums Prins co, movaLrrna wAsmNGToN D c 4UNITED STATES i PATENT FFICE.

JOIIN II. MORRIS, OF FREMONT, NEBRASKA.

PERM UTATlON-LOCK.

SPECIFICATION forming part of Letters Patent No. 632,735, VdatedSeptember 12, 1899.

Application tiled May 26, 1899. Serial No. 718,346. (No model T0 @ZZwhom, it may concern.'

Be it kn own that I, JOHN 1I. MORRIS, a citizen of the United States,residing at Fremont, in the county of Dodge and State of Nebraska, haveinvented a new and useful Improvement in Permutation-Locks, of which thefollowing is a specification.

My invention relates to permutation-locks,

described and claimed, and in order that the.

invention maybe fully understood reference is to be had to theaccompanying drawings, in Which- Figure lis a front view of apost-oiiice lockbox provided with ar permutation-lock embodying myinvention. Fig. 2 is an inner face view showing the lock unlocked. Fig.3 is a view showing the position of the bolt and associated mechanism asthe door is closed. Fig. 4 is a section taken on the line IV IV ofFig. 1. Fig. 5 is a section on the line V V of Fig. 4 with the dialomitted. Fig. 6 is a vertical section taken on the line VI VI of Fig. 2.Fig. 7 is a detail face view of the sliding plate, which is mounted onthe bolt-carrying member of the lock. Fig. 8 is a similar view of theoscillatory bolt and tripping-plate.

As the lock forming the subject of the present application issubstantially a duplicate of the patented structure, the parts common toboth are correspondingly7 numbered, but not elaborately described,reference being herewith made to said patent for a full understanding ofthe construction Yand operation of the lock in all its features, exceptthose added for causing it to automatically lock when the door isclosed. Y

Referring to the drawings, 1 designates the door, 2 the transparentwindow thereof, and 3 the circular opening of the door. 4 designates thehub of the lock member journaled in said opening, and 5 its circularhead,hav

ing the hole or recess 6. 8 designates the knob of said member, providedwith a tubular stem 9, iitting into the hub 4, and 10 the clampingscrewuniting the hub with the knob.

11 designates a washer clamped to the bolt upon the hub 5 and stem 9 andprovided with a lug 11a at a suitable point, said washer being reliablysecured to the hub to. prevent slippage by the pin 11b, projecting fromthe hub. The lug 1la above referred to is a feature not disclosed in theaforesaid patent, and its object will be hereinafter explained.

12 designates a pin or pins projecting outward from the stem 9 andengaging a groove 13 in the end of the hub to more reliably interlock`the hub and knob together, and 14 designates the dial, in the form of aconical ring, provided with characters upon its face, any one of whichis adapted to register with the indicating-mark 16 upon the face of thedoor.

17 designates the elongated opening of the door, and 18atongueprojecting inward thereof. The hub 19 of the member companion to thatjust described is journaled in the opening 17 and provided with a recess20, adapted to have telescopic action on the tongue 18. The knob 26 isprovided with a tubular stein 27 and is interlocked with the stem 19 bymeans of the pin or pins 28, and 29 designates the dialmember, providedwith suitable characters on its face and clamped between the hub 19 andthe knob 26, any of its characters being adapted to register with theindicating-mark 30 upon the face of the door.

31 designates the clamping-screw for securing the hub member and theknob together, and 32 the washer interposed between the screw and thestem and overlapping the latter and the reduced portion of the hub',soas to hold upon the latter the washer 33, which washer in turn overlapsthe oscillatory plate 34,mounted on the hub 19, from which the bolt 35and the tripping-arm 351 project, the upper edge of the bolt at itsouter end being beveled, as shownv at 35a. The corresponding plate ofthe aforesaid patented structure is not provided with said tripping-armnor is its boltextension beveled. Interposed between the plate 34 andthe door and also journaled upon hub 19 is the slide-plate 40, providedwithatongue 42, extending radially toward the hub 5 and IOO adapted whenthe recess 6 of the latter is properly disposed to enter said recess asthe knob 26 is pressedv toward the knob 8, this action, as will bereadily understood, causing the bolt .35 to be withdrawn from the recess361 of the lock-box, the overlapping arm 36 of the lock-box making itimpossible to open the door unless Ithe bolt is moved in the directionindicated by the arrow, Fig. 4.

Assuming that the door is unlocked when A on the dial 29 registers withthe doormark 30 and door-mark 16 registers with the mark centrallybetween M and N of dial la it will be seen that the recess 6 registerswith the tongue 42 of the sliding plate, that the recess 20 registerswith the tongue 18 of the door, and that to open the latter it isnecessary to press the knob 26 toward the knob 8. As the door is closedit will be seen by reference particularly to Fig. 6 that the bolt 35 isheld by the pressure of the spring 43 in such position that its beveled`surface 35 must and does strike the beveled surface of the arm 36 ofthe door-casing and consequently be forced downward into the lower endof the opening 36D, the tension of the spring 43 serving to reelevate itas soon as it clears the lower end of said arm 36a. In its new positionit is overlapped by said arm and can only be withdrawn from the recess3Gb by a direct reciprocatory movement, as hereinbefore explained. Underthe oscillatory movement of said plate caused by its engagement with thebeveled surface of the arm 36a the trip-arm 35h, moved upward from theposition shown in Fig. 3 t0 the position shown in Fig 2 and byengagement with the lug 1l of washer 11, threw the notch 6 of hub 5 outof register with the tongue 42 of the sliding plate, the rotation ofsaid hub 5 of course being imparted to the dial 14 so as toautomatically lock the door by throwing olif the combination. To make itmore dicult for a person to find the combination, the dial 29 is alsoturned; but this must be manually performed.

From the above description it will be apparent that I have produced apermutationl' lock` which is automatically-locking and which embodiesthe desirable features of simplicity, durability, and cheapness ofconstruction. Y

Having thus described the invention, what I claim as new7 and desire tosecure by Letters Patent, is-

1. A permutation-lock mounted in a door, comprising a reciprocatory hub,a sliding plate mounted thereon and provided with a tongue, anoscillatory bolt mounted upon the reciprocatory hub, the door-casingprovided with a recess to receive said bolt, and a beveled arm todeflect the bolt therein, a spring to elevate said bolt within saidrecess and be# hind said arm, a rotatable hub journaled in the door andprovided with a radial recess or notch to register with the tongue ofsaid sliding plate, and means actuated by the movement of the boltimparted by said beveled arm to rotate said hub and throw its recess ornotch out of register with said tongue, substantially as described.

2. A permutation-lock mounted in a door, comprising a reciprocatory hub,a sliding plate mounted thereon and provided with a tongue, anoscillatory bolt mounted upon the reciprocatory hub and provided with atriparm, the door-casing provided with a recess to receive said bolt, abeveled arm to deliect the bolt therein, and a spring to elevate saidbolt within said recess and behind said arm, a rotatable hub journaledin the door and provided with a radial recess or notch to register withthe tongue of said sliding plate, and a washer secured to said rotatablehub and provided with an arm intercepting the path of movement of thetrip-arm when the bolt is oscillated by said beveled arm, substantiallyas described.

In testimony whereof I affix my signature in the presence of twowitnesses.

JOHN H. MORRIS.

Witnesses:

H. E. OLEsoN, C. C. McNIsH.

